Problem: Is "The lake was a safer place to swim." true if "We went to the lake, because a shark had been seen at the ocean beach, so it was a safer place to swim."?
Answer: yes

Problem: Is "The scientists appeared two years ago." true if "The scientists are studying three species of fish that have recently been found living in the Indian Ocean. They appeared two years ago."?
Answer: no

Problem: Is "Dan took the rear seat while Bill claimed the front because Dan's "Dibs!" was quicker." true if "Dan took the rear seat while Bill claimed the front because his "Dibs!" was quicker."?
Answer: no

Problem: Is "The chatbots were so stupid." true if "At the Loebner competition the judges couldn't figure out which respondents were the chatbots because they were so stupid."?
Answer:
no